A group dressed in wonder women costumes head toward the finish line during the Bay to Breakers.

A group dressed in wonder women costumes head toward the finish line during the Bay to Breakers.

Photo: Laura Morton, Special To The Chronicle

A group dressed in wonder women costumes head toward the finish... Photo-2028308.34658 - SFGate

Image 12 of 64

A woman looked back at an odd mouse outfit worn by a runner Sunday. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

A woman looked back at an odd mouse outfit worn by a runner Sunday. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

Photo: Brant Ward, The Chronicle

A woman looked back at an odd mouse outfit worn by a runner Sunday.... Photo-2028309.34658 - SFGate

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Some of the runners were displeased with the new Bay to Breakers rules. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

Some of the runners were displeased with the new Bay to Breakers rules. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

Photo: Brant Ward, The Chronicle

Some of the runners were displeased with the new Bay to Breakers... Photo-2028310.34658 - SFGate

Image 14 of 64

A group of women wearing skin colored outfits with fig leaves on their chest ran up Hayes Street sunday. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking. less

A group of women wearing skin colored outfits with fig leaves on their chest ran up Hayes Street sunday. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public ... more

A young admirer looked back to get a glimpse of Square Bob on Hayes Street. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

A young admirer looked back to get a glimpse of Square Bob on Hayes Street. The 98th running of the Bay to Breakers in San Francisco, CA featured a police crackdown on public drinking.

Photo: Brant Ward, The Chronicle

A young admirer looked back to get a glimpse of Square Bob on Hayes... Photo-2028311.34658 - SFGate

Image 16 of 64

Runners make their way up Howard Street at the start of the 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

Runners make their way up Howard Street at the start of the 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits ... more

Photo: Carlos Avila Gonzalez, The Chronicle

Runners make their way up Howard Street at the start of the 98th... Photo-2028312.34658 - SFGate

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Runners make their way up Howard Street at the start of the 98th running of the Bay to Breakers.

Runners make their way up Howard Street at the start of the 98th running of the Bay to Breakers.

Photo: Carlos Avila Gonzalez, The Chronicle

Runners make their way up Howard Street at the start of the 98th... Photo-2028313.34658 - SFGate

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Chris Schuette (standing right) forces Kyle McNeely and Ashley Bender to kiss as they party in the kiddy pool float duing the Bay to Breakers.

Chris Schuette (standing right) forces Kyle McNeely and Ashley Bender to kiss as they party in the kiddy pool float duing the Bay to Breakers.

Unidentified runners enjoy water being sprayed on them as they ascend the Hayes Street hill during the 98th running of the Bay to Breakers race in San Francisco, Sunday, May 17, 2009. The annual race, which attracts as many as 70,000 runners, is well known for its participants wearing wacky costumes. (AP Photo/Darryl Bush) less

Unidentified runners enjoy water being sprayed on them as they ascend the Hayes Street hill during the 98th running of the Bay to Breakers race in San Francisco, Sunday, May 17, 2009. The annual race, which ... more

Photo: Darryl Bush, AP

Unidentified runners enjoy water being sprayed on them as they... Photo-2028318.34658 - SFGate

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John Michael Cordero (right) laughs after throwing beer on friend Jackson Nicolas ( left) as they walk the Bay to Breakers.

John Michael Cordero (right) laughs after throwing beer on friend Jackson Nicolas ( left) as they walk the Bay to Breakers.

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of ... more

Photo: Carlos Avila Gonzalez, The Chronicle

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On... Photo-2028320.34658 - SFGate

Image 25 of 64

Runners get a brief spray of water from the firefighters at Station 1 on Howard Street while they run the Bay to Breakers.

Runners get a brief spray of water from the firefighters at Station 1 on Howard Street while they run the Bay to Breakers.

Photo: Carlos Avila Gonzalez, The Chronicle

Runners get a brief spray of water from the firefighters at Station... Photo-2028321.34658 - SFGate

Image 26 of 64

Runners get a brief spray of water from the firefighters at Station 1 on Howard Street while they run the Bay to Breakers.

Runners get a brief spray of water from the firefighters at Station 1 on Howard Street while they run the Bay to Breakers.

Photo: Carlos Avila Gonzalez, The Chronicle

Runners get a brief spray of water from the firefighters at Station... Photo-2028322.34658 - SFGate

Image 27 of 64

Anna Lin of San Francisco, steps on "Twister" runners (left to right) Ryan Avery, Erin Esko, and Kermit Goodman, during the 98th running of the Bay to Breakers.

Anna Lin of San Francisco, steps on "Twister" runners (left to right) Ryan Avery, Erin Esko, and Kermit Goodman, during the 98th running of the Bay to Breakers.

SAN FRANCISCO - MAY 17: Runners, some wearing costumes, take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners, some wearing costumes, take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the ... more

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of ... more

Photo: Carlos Avila Gonzalez, The Chronicle

The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On... Photo-2028326.34658 - SFGate

Image 30 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028327.34658 - SFGate

Image 31 of 64

A float at the 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

A float at the 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but ... more

Photo: Carlos Avila Gonzalez, The Chronicle

A float at the 98th running of the Bay to Breakers. On hand were... Photo-2028328.34658 - SFGate

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Todd Osborne, of Laguna Beach, and Amy Cheng of Lexington, Kent., hug during the Bay to Breakers race. The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

Todd Osborne, of Laguna Beach, and Amy Cheng of Lexington, Kent., hug during the Bay to Breakers race. The 98th running of the Bay to Breakers on Sunday, May 17, 2009. On hand were the usual costumed runners, ... more

Participants of the 98th running of the Bay to Breakers head down Howard Street. On hand were the usual costumed runners, floats, and scene.

Participants of the 98th running of the Bay to Breakers head down Howard Street. On hand were the usual costumed runners, floats, and scene.

Photo: Carlos Avila Gonzalez, The Chronicle

Participants of the 98th running of the Bay to Breakers head down... Photo-2028330.34658 - SFGate

Image 34 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028331.34658 - SFGate

Image 35 of 64

The 98th running of the Bay to Breakers. On hand were the usual costumed runners.

The 98th running of the Bay to Breakers. On hand were the usual costumed runners.

Photo: Carlos Avila Gonzalez, The Chronicle

The 98th running of the Bay to Breakers. On hand were the usual... Photo-2028332.34658 - SFGate

Image 36 of 64

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in... Photo-2028333.34658 - SFGate

Image 37 of 64

Spectators watch the running of the Bay to Breakers from a rooftop on Howard Street.

Spectators watch the running of the Bay to Breakers from a rooftop on Howard Street.

Photo: Carlos Avila Gonzalez, The Chronicle

Spectators watch the running of the Bay to Breakers from a rooftop... Photo-2028334.34658 - SFGate

Image 38 of 64

The 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

The 98th running of the Bay to Breakers. On hand were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little ... more

Photo: Carlos Avila Gonzalez, The Chronicle

The 98th running of the Bay to Breakers. On hand were the usual... Photo-2028335.34658 - SFGate

Image 39 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028336.34658 - SFGate

Image 40 of 64

SAN FRANCISCO - MAY 17: (EDITORS NOTE: THIS IMAGE CONTAINS PARTIAL NUDITY) Nude participants take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: (EDITORS NOTE: THIS IMAGE CONTAINS PARTIAL NUDITY) Nude participants take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING ... more

SAN FRANCISCO - MAY 17: Participants run up Hayes Street Hill with the backdrop of the city's "Painted Ladies" houses during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Participants run up Hayes Street Hill with the backdrop of the city's "Painted Ladies" houses during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its ... more

The salmon run upstream during their annual migration at the Bay to Breakers.

The salmon run upstream during their annual migration at the Bay to Breakers.

Photo: Carlos Avila Gonzalez, The Chronicle

The salmon run upstream during their annual migration at the Bay to... Photo-2028339.34658 - SFGate

Image 43 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028340.34658 - SFGate

Image 44 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028341.34658 - SFGate

Image 45 of 64

SAN FRANCISCO - MAY 17: Runners participate in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners participate in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and ... more

On hand during the 98th running of the Bay to Breakers were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little enforcement was visible in the the mix. less

On hand during the 98th running of the Bay to Breakers were the usual costumed runners, floats, and scene. This year's news was the new rules regarding permits for floats and prohibition of kegs, but little ... more

Photo: Carlos Avila Gonzalez, The Chronicle

On hand during the 98th running of the Bay to Breakers were the... Photo-2028343.34658 - SFGate

Image 47 of 64

SAN FRANCISCO - MAY 17: A costumed runner comes out of the toilets during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: A costumed runner comes out of the toilets during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: A costumed runner comes out of the toilets... Photo-2028344.34658 - SFGate

Image 48 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Runners wearing costumes take part in the... Photo-2028345.34658 - SFGate

Image 49 of 64

Spectators cheer the party on walkers along Hays Street during the Bay to Breakers.

Spectators cheer the party on walkers along Hays Street during the Bay to Breakers.

Photo: Lacy Atkins, The Chronicle

Spectators cheer the party on walkers along Hays Street during the... Photo-2028346.34658 - SFGate

Image 50 of 64

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: A runner wearing a costume takes part in... Photo-2028347.34658 - SFGate

Image 51 of 64

Thousands of people run through the water stands leaving trash along the Oak Street during the Bay to Breakers.

Thousands of people run through the water stands leaving trash along the Oak Street during the Bay to Breakers.

Photo: Lacy Atkins, The Chronicle

Thousands of people run through the water stands leaving trash... Photo-2028348.34658 - SFGate

Image 52 of 64

SAN FRANCISCO - MAY 17: Participants run up Hayes Street Hill during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Participants run up Hayes Street Hill during the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the ... more

SAN FRANCISCO - MAY 17: Two participants, one in costume, walk through a parking lot to get to the start of the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Two participants, one in costume, walk through a parking lot to get to the start of the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ... more

Photo: Ezra Shaw, Getty Images

SAN FRANCISCO - MAY 17: Two participants, one in costume, walk... Photo-2028350.34658 - SFGate

Image 54 of 64

SAN FRANCISCO - MAY 17: Runners wearing costumes wait for the start of the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the world's largest and oldest footraces, featuring world-class athletes in addition to costumed runners. (Photo by Ezra Shaw/Getty Images) less

SAN FRANCISCO - MAY 17: Runners wearing costumes wait for the start of the ING Bay to Breakers race May 17, 2009 in San Francisco, California. Now in its 98th year, the ING Bay to Breakers 12K is one of the ... more